Stihl KMA 120 R Cordless KombiMotor

Description

Is the STIHL KMA 120 R right for you?

The STIHL KMA 120 R Cordless KombiMotor is a professional battery-powered multi-tool engine for landscaping, grounds maintenance, estate work and demanding garden care.

It forms the power unit at the centre of the STIHL KombiSystem. Instead of purchasing a separate motor for every job, you can fit compatible KombiTool attachments for grass trimming, brushcutting, hedge maintenance, pruning, leaf clearing, lawn edging, sweeping and soil cultivation.

The KMA 120 R is part of STIHL’s professional 36V battery range. STIHL now also uses the ALLPRO name for its developing professional battery platform, while compatible existing AP batteries and tools remain supported.

Best suited to: professional landscapers, grounds teams, facilities managers, local authorities, estate owners and demanding users who need one power unit for several regular maintenance tasks.

Not included: battery, charger and KombiTool attachment.

Masseys recommendation: Choose the KMA 120 R when you need a professional cordless KombiMotor with more workload capacity than the domestic KMA 80 R, but do not require the additional speed level and top-end specification of the KMA 135 R.

New to the attachment system? Read our STIHL KombiSystem buying guide before selecting your power unit and attachments.

What is included?

• 1 × STIHL KMA 120 R cordless KombiMotor power unit
• 1 × Basic shoulder harness
• Adjustable loop handle with barrier bar
• Quick-release KombiTool coupling

The following items are not included:

• STIHL AP/ALLPRO battery
• Battery charger
• KombiTool working attachment

A battery, charger and working attachment must be selected separately before the machine can be used.

What jobs can the KMA 120 R perform?

The KMA 120 R can operate compatible STIHL KombiTools for:

• Grass trimming around borders, walls and obstacles
• Cutting long grass and heavier weeds
• Trimming tall hedges and wide shrubs
• Pruning overhead branches
• Clearing leaves and grass cuttings
• Defining lawn and path edges
• Cultivating beds and loosening soil
• Sweeping paths, yards and hard surfaces
• Cutting low shrubs and ground cover

One motor can therefore replace several separate powered machines where the jobs can be completed using compatible KombiSystem attachments.

Key features of the STIHL KMA 120 R

Professional 36V AP/ALLPRO battery system

The KMA 120 R accepts compatible batteries from the STIHL professional AP/ALLPRO battery range.

The battery fits directly into the power-unit housing, creating a self-contained setup without a cable or external battery belt for normal handheld use.

Existing compatible AP batteries can also be shared with many STIHL professional chainsaws, brushcutters, hedge trimmers, blowers, pole pruners, mowers and other cordless machinery.

Two selectable power levels

The operating handle provides two selectable speed levels:

• Level 1 – ECO: reduces speed and energy consumption for lighter tasks and attachments.
• Level 2 – full power: provides increased output for attachments and working conditions that require more performance.

The trigger also allows the operating speed to be varied within the selected level, helping the user match output to the attachment and material.

Constant-power EC motor

The efficient brushless EC motor requires less routine maintenance than a petrol engine and provides consistent power as the battery charge falls.

There is no fuel mixing, carburettor maintenance or pull-cord starting, and the machine produces no exhaust fumes during operation.

Quick-release KombiTool coupling

The quick-release coupling allows a compatible KombiTool to be connected and removed without specialist tools.

Insert the attachment shaft into the coupling, align it correctly and secure it using the clamping screw. This makes it practical to change between several jobs during the same working day.

Detachable shaft

The shaft separates at the KombiTool coupling, making the power unit easier to carry and store. It can be transported in a smaller vehicle or stored without requiring the full assembled machine length.

Adjustable loop handle with barrier bar

The loop handle can be adjusted to suit the user and working position. It provides good manoeuvrability around trees, borders, slopes and confined spaces.

The barrier bar helps maintain separation between the operator’s legs and suitable cutting attachments.

IPX4 splash-water protection

The KMA 120 R has IPX4 splash-water protection when correctly assembled and used with suitable compatible equipment.

IPX4 does not mean the machine or battery is waterproof. Do not immerse the equipment or clean it using a pressure washer.

Basic harness included

A basic harness is supplied with the power unit. Using a correctly adjusted harness can improve support and control, particularly with heavier or longer attachments.

For extended hedge trimming or pruning, customers can also consider the STIHL RTS Super Harness.

Which KombiTools fit the KMA 120 R?

The KMA 120 R is compatible with current STIHL KombiTools except the FSB-KM bent-shaft strimmer attachment.

Popular compatible attachments available from Masseys include:

• STIHL FS-KM strimmer attachment – for lawn edges and general grass trimming
• STIHL MB-KM brushcutter attachment – for long grass and heavier vegetation
• STIHL HL-KM 145° hedge-trimmer attachment – for tall hedges, wide shrubs and angled cutting
• STIHL FH-KM shrub-cutter attachment – for ground cover, low shrubs and controlled cutting
• STIHL HT-KM pole-pruner attachment – for pruning overhead branches
• STIHL BG-KM blower attachment – for leaves, grass cuttings and loose debris
• STIHL FCS-KM straight-shaft lawn edger – for defined lawn and path edges
• STIHL BF-KM pick-tine cultivator – for loosening soil and working compost into beds
• STIHL KB-KM bristle-brush attachment – for sweeping hard outdoor surfaces

Browse the complete STIHL KombiSystem range for all available power units, attachments and accessories.

Battery options for the STIHL KMA 120 R

Battery choice should be based on the attachment, expected workload, required runtime and acceptable machine weight.

STIHL AP 200 S

The STIHL AP 200 S battery is the lightest of the three principal battery choices shown below. It is particularly useful when reduced handheld weight is important or when the machine will be used mainly with hedge-trimming and lighter attachments.

STIHL AP 300 S

The STIHL AP 300 S battery offers a strong balance of runtime, weight and cost for mixed professional KombiSystem work.

For many contractors using several different attachments, this is the most practical all-round battery choice.

STIHL AP 500 S

The STIHL AP 500 S battery provides the longest handheld working times of these three options, but it is also the heaviest and most expensive.

It is most useful where reducing battery changes is more important than minimising machine weight.

Choose a suitable charging solution from our STIHL battery charger range.

Approximate KMA 120 R battery working times

STIHL working-time figures vary according to the battery, KombiTool and selected power level. The figures below show approximate ranges from full-power mode to ECO mode.

These working times are approximate rather than guaranteed. Runtime changes according to material, attachment condition, power level, battery age, temperature and operating technique.

STIHL KMA 120 R technical specifications

KMA 80 R, KMA 120 R or KMA 135 R?

Choose the KMA 80 R when:

• The machine is primarily for home garden maintenance
• You already own STIHL AK batteries
• You do not need a professional battery platform
• Lower initial cost is a priority

View the STIHL KMA 80 R cordless KombiMotor.

Choose the KMA 120 R when:

• You need a professional cordless KombiMotor
• You regularly switch between several attachments
• You already own STIHL AP batteries
• You need professional runtime without moving to the highest-spec model
• You work in schools, housing areas, hospitals or other noise-sensitive locations

Choose the KMA 135 R when:

• The machine will be used intensively throughout the working week
• You want three speed levels
• You need the higher-spec professional motor and filtration features
• Maximum professional capability is more important than initial cost

View the STIHL KMA 135 R professional cordless KombiMotor.

Cordless or petrol KombiEngine?

Choose the KMA 120 R when you want:

• Low-noise operation
• No exhaust fumes during use
• No fuel mixing
• Push-button starting
• Lower routine motor maintenance
• Compatibility with existing professional STIHL batteries

A petrol machine may remain more suitable when battery charging is impractical, the machine will be used continuously in remote locations or an established petrol KombiSystem setup is already in place.

For heavier petrol-powered work, compare the STIHL KM 131 R petrol KombiEngine.

Masseys expert verdict

The KMA 120 R occupies an important middle position in STIHL’s cordless KombiSystem range.

It offers the professional AP/ALLPRO battery platform and broad KombiTool compatibility without requiring every user to move to the higher-spec KMA 135 R.

For contractors and grounds teams carrying out a mixture of trimming, hedge cutting, pruning, blowing and edging, the KMA 120 R provides a flexible single-motor system with meaningful working times when matched to the correct AP battery.

The principal buying decision is not simply which motor to choose. It is the combination of motor, battery and attachment. An AP 200 S may be preferable for lengthy hedge work where lower weight matters, while an AP 300 S or AP 500 S may be more appropriate for energy-intensive blowing or brushcutting.

The KMA 120 R should not be purchased for use with the FSB-KM attachment, and customers completing only occasional domestic garden maintenance should also compare the lower-cost KMA 80 R.

Why buy the STIHL KMA 120 R from Masseys?

Masseys is an authorised STIHL dealer based in Woodville, Swadlincote. Our garden machinery team can help customers create a complete KombiSystem package rather than purchasing incompatible or unsuitable components.

• Genuine STIHL KMA 120 R power unit
• Assembly and pre-delivery inspection where appropriate
• Basic operating guidance
• Advice on compatible KombiTools
• Help selecting the correct AP battery and charger
• Local showroom at 129 Swadlincote Road, Woodville, Swadlincote, DE11 8DA
• Access to our garden machinery servicing and repair department

Browse the complete STIHL machinery range available from Masseys.

Frequently asked questions

Does the STIHL KMA 120 R include a battery and charger?

No. This listing is for the KMA 120 R power unit and basic harness only. A compatible AP/ALLPRO battery, charger and KombiTool must be purchased separately.

Does the KMA 120 R include an attachment?

No. The working attachment is sold separately. Choose a compatible KombiTool for trimming, hedge cutting, pruning, blowing, edging, cultivating or sweeping.

Which batteries fit the STIHL KMA 120 R?

The KMA 120 R accepts compatible batteries from STIHL’s professional AP/ALLPRO platform, including the AP 200 S, AP 300 S and AP 500 S.

Which battery is best for the KMA 120 R?

The AP 300 S is a strong all-round choice for mixed attachment use. Choose the lighter AP 200 S where machine weight is particularly important, or the AP 500 S where maximum handheld runtime is the priority.

How long does the KMA 120 R battery last?

Runtime depends heavily on the battery, attachment and power level. For example, an AP 300 S provides approximately 25–50 minutes with the FS-KM and approximately 160–240 minutes with an HL-KM hedge-trimmer attachment.

Does every STIHL KombiTool fit the KMA 120 R?

The KMA 120 R is compatible with current STIHL KombiTools except the FSB-KM bent-shaft strimmer attachment.

Can the KMA 120 R use an FSB-KM attachment?

No. The FSB-KM must not be used with the KMA 120 R.

How much does the KMA 120 R weigh?

The power unit weighs approximately 3.5kg without a battery or KombiTool attachment.

Can the KMA 120 R be separated for storage?

Yes. The shaft separates at the KombiTool coupling without specialist tools, making transport and storage easier.

Can the KMA 120 R be used in rain?

The power unit has IPX4 splash-water protection and is designed for professional outdoor use in suitable conditions. It is not waterproof and must not be immersed or cleaned using a pressure washer.

What is the difference between AP and ALLPRO?

ALLPRO is STIHL’s current developing professional battery-system name. Existing compatible AP tools and batteries remain part of the wider professional platform and continue to be supported.

Is the KMA 120 R suitable for homeowners?

It can be used by demanding homeowners and estate owners, but the AK System KMA 80 R is normally the more cost-effective choice for ordinary domestic garden maintenance.

What is the difference between the KMA 120 R and KMA 135 R?

Both use STIHL’s professional battery system. The KMA 120 R has two selectable power levels, while the KMA 135 R is the higher-spec model with three power levels and additional professional features for more intensive work.

Safe use

Read the KMA 120 R manual and the separate instructions supplied with each KombiTool before use.

• Confirm that the selected KombiTool is approved for the KMA 120 R
• Do not fit or use the FSB-KM attachment
• Remove the battery before fitting, removing, cleaning or inspecting an attachment
• Wear the personal protective equipment required for the fitted KombiTool
• Inspect the attachment, coupling and guards before starting
• Keep people and animals outside the required working distance
• Check for stones, wire, cables and other hidden hazards
• Use the harness where recommended
• Keep the battery compartment and controls clean
• Do not immerse or pressure-wash the machine

Safety requirements vary considerably between cutting, pruning, blowing, edging and cultivating attachments. Always follow the instructions for the specific KombiTool being used.